First Heat Wave To Scorch The West Because Of A ‘Heat Dome.’ Who Will See Extreme Temps?

The USA’s first major heat wave of the summer will overspread the West over the next few days, forecasters said, pushing temperatures to dangerous and even “life-threatening” levels across several states, including California, Nevada and Arizona.

By the middle of the week, temperatures in both Phoenix and Las Vegas could reach 111 degrees, the National Weather Service said. Many record highs are possible.